The objective of this study was to estimate genetic parameters for body weight and conformation traits in Santa Inês sheep. A total of 1,272 records from 511 animals born between 1992 and 2013 to 68 rams and 352 ewes, belonging to five herds, were used. The following variables were analyzed: body weight (BW), heart girth (HG), hip height (HH), wither height (WH), rump width (RW), and body length (BL). The variance components were estimated by the REML method in two-trait analysis using an animal model. The model included random direct additive genetic, permanent environmental and residual effects and contemporary group and the linear effect of age of animal as fixed. Heritability estimates were 0.08, 0.25, 0.42, 0.48, 0.32 and 0.24 for BW, HG, HH, WH, RW and BL, respectively. Genetic correlations between weight and body measures were high, ranging from 0.75 to 1.0.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Species Breeding: Sheep and goats (Posters), , 897, 2014
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